Advantages and disadvantages of forging die forging process
From the aspect of forging quality, metal deformation is limited due to the action of the mold during the forming process, the forged structure of the forged part is dense, the forging quality is relatively good, the surface quality is also good, and the machining allowance is also small, the material is The utilization rate is greatly improved, the production efficiency is relatively high, and the forgings with more complicated shapes can be forged, and large forgings can be produced on small equipment, and partial molding can also be performed.
According to different types of forging equipment, the forging process of forgings can be divided into: hammer forging, crank pressure die forging, flat forging die forging, screw press forging, hydraulic press forging, high speed hammer forging and other special equipment ( Forging, such as precision press, roll forging machine, rotary forging machine, reaming machine, bending machine, etc.). Although the die forging method is many, and the basic principle is basically the same, the blank is forced into the forging model groove by plastic deformation.
Die forging is the main forging method for the production of stainless steel forgings in batches or in large quantities. The characteristic is that under the action of the forging machine, the blank is forced to plastically flow in the forging model groove, thereby obtaining a forging piece with higher quality than the free forging.
Generally speaking, die forging has the following recognized characteristics: 1. High productivity; 2. Can produce forgings with complex shapes, high dimensional accuracy and surface finish; 3. Small machining allowance for forgings, material utilization Higher; 4. The flow line distribution can be more complete and reasonable, thereby further improving the service life of the parts; 5. The production process is simple and easy to operate, and the labor intensity is smaller than free forging; 6. The forging cost is low, especially in mass production. In case.
However, die forging also has its shortcomings: 1. The equipment investment is large; 2. The production preparation cycle is long, especially the forging die manufacturing cycle is generally large, and the production of small forgings is economically uneconomical; 3. The forging die is costly, and Low life; 4. Process flexibility is not as good as free forging.